Jack, his mysterious girlfriend Blossom and the neighbor boys Bruno and Rocco stepped through a hole in the wall of an old, abandoned house straight into a shining portal sparkling with bright light to find Blossom's dad. To the children's surprise, the portal led them to a huge green world full of amazing things and animals. Here Jack met the man to whom he said goodbye forever... his grandfather! And he told Jack how he found himself in this strange world and how he could return home. Jack, his grandfather, Blossom and the Buckley boys head back to the old house. But one of the boys brought into our world an unusual bird’s egg, from which a chick hatched right before their eyes!